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annotate LazyBear/Views/Profile/Helpers/WatchlistSheet.swift @ 427:e707dbfc3115

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Fixing weird animation .onDelete
author Dennis Concepción Martín <66180929+denniscm190@users.noreply.github.com>
date Wed, 16 Jun 2021 13:46:40 +0200
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children 8c58ce834d95
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e707dbfc3115 Fixing weird animation .onDelete
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1 //
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2 // WatchlistSheet.swift
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3 // LazyBear
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4 //
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5 // Created by Dennis Concepción Martín on 16/6/21.
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6 //
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7
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8 import SwiftUI
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9
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10 struct WatchlistSheet: View {
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11 var listName: String
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12 var companies: [CompanyModel]
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13
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14 @Environment(\.presentationMode) private var watchlistSheetPresentation
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15 @Environment(\.managedObjectContext) private var moc
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16 @FetchRequest(entity: WatchlistCompany.entity(), sortDescriptors: [NSSortDescriptor(key:"symbol", ascending:true)])
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17 var watchlistCompanies: FetchedResults<WatchlistCompany>
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18
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19 /*
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20 NSSortDescriptor and .sorted(by: {} in ForEach must coincide. If not .onDelete is not working well.
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21 */
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22 var body: some View {
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23 NavigationView {
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24 VStack {
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25 List {
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26 ForEach(companies.sorted(by: { $0.companyName < $1.companyName }), id: \.self) { company in
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27 StockSheetRow(company: company)
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28 }
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29 .onDelete(perform: deleteCompany)
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30 }
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31 }
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32 .navigationTitle(listName)
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33 .navigationBarTitleDisplayMode(.inline)
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34 .toolbar {
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35 ToolbarItem(placement: .navigationBarLeading) {
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36 Button(action: {watchlistSheetPresentation.wrappedValue.dismiss()}) {
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37 Image(systemName: "multiply")
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38 }
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39 }
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40 }
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41 }
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42 }
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43
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44 /*
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45 Delete company from watchlist
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46 */
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47 private func deleteCompany(at offsets: IndexSet) {
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48 print(watchlistCompanies)
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49 for index in offsets {
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50 print(index)
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51 let company = watchlistCompanies[index]
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52 moc.delete(company)
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53 }
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54 do {
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55 try moc.save()
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56 print("Company deleted")
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57 } catch {
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58 print(error.localizedDescription)
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59 }
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60 }
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61 }
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62
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63 struct WatchlistSheet_Previews: PreviewProvider {
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64 static var previews: some View {
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65 WatchlistSheet(
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66 listName: "Most active",
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67 companies: [CompanyModel(symbol: "aapl", companyName: "Apple Inc", latestPrice: 120.3, changePercent: 0.03, intradayPrices: [120.3])]
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68 )
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69 }
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70 }